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/*-
* ============LICENSE_START=======================================================
* ONAP : APPC
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Copyright (C) 2017 Amdocs
* =============================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
* ============LICENSE_END=========================================================
*/
package org.onap.appc.statemachine;
import org.onap.appc.exceptions.InvalidInputException;
import org.onap.appc.statemachine.objects.Event;
import org.onap.appc.statemachine.objects.State;
import org.onap.appc.statemachine.objects.StateMachineResponse;
/**
* Interface of the StateMachine
*/
public interface StateMachine {
/**
* Handle event
* @param currentState the current State which the event should be handled from
* @param event the Event that needs to be handled
* @return StateMachineResponse
* @throws InvalidInputException
* when the passed in currentState and event are not predefined or no relevant transition
*/
StateMachineResponse handleEvent(State currentState, Event event) throws InvalidInputException;
}
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